Eh. Far too grindy. I took to simply holding CTRL and mash clicking the top left to rapid-fire through training because you gain like 1-3% corruption per mostly indentical scene. Log on the chick says being spychic makes her more vulnerable to a certain type of corruption, but there was no visible difference in corruption gained and it takes longer to not just spam click top left.
You spam click through the same scene to see the girl go through 5 stages of corruption. Think it was 5. Can't go back. So if you liked a certain stage design or dialogue, better have made a backup.
Scenes per stage up to 5 are being bred or being corrupted. Corruption changes animations with her levels, dialogue, etc. Breeding does only dialogue with exception to the futa demon chick who gets new positions.
So you spam click 20 times the same scene, it changes, see the new version once, then spam click 19 more times. Repeat until you've seen it all.
Girls corruption is weird. She starts out fine, takes her tits out, gets glowy green eyes, loses them and looks more human then before, then suddenly changes into a monster girl. An ugly one. Green eye should be later than it is.
Once girl is in the last stage, you lose the ability to do any corruption actions, even just for fun or because watching her suck off a tentacle is fun. You can still breed her. And you can fuck her yourself, as a reskinned version of one of the torture options. 3 actions available. So you gain 3 actions, but lose 6. Its a down grade.
Tone down the absurd grind and I wouldn't rate it so low, but at the same time, the game doesn't really have much to it beyond the grind. There's combat but you can just spam click corruption seemingly infinitely without ending the day and never have to interact with it at all.